Valve spring



Dec. 11, 1928.

A S. 'BARNEY, SR

VALVE SPRING Filed Sept. 12, 1924 Patented Dec. 11, 1928.

- UNITED sras ANDREW SEAMAN BARNEY,

VALVE Application filed. September This invention relates to an improved valve spring structure and one object of the invention is to provide a structure in which a plurality of springs will be made use of and so disposed with respect to a valve stem that the valve will be properly seated upon its seat and prevented from being tilted to one side.

It has been found that when a singlespring is made use of and disposed about the valve stem it tends to tilt the valve out of the proper position this being evidenced by the fact thatwhen a valve with a single spring is removed, oneside of the valve stem will be found to be worn by frictional contact with the spring and further the valve and'seat will be found to be unevenly Worn.

Another object of this invention is to provide a spring structure which may be applied to the stems of valves already in use, thus making it unnecessary to provide a special construction of valve in order to permit the improvedvalve spring structure to be made use of.

Another object of the invention is to provide a valve spring structure in which a disk engaging the lower ends of the valve springs may be adjusted with respect to an upper disk engaged by the springs and the springs therefore kept at the proper compression.

Another object of the invention is to provide a spring structure which will be simple in its construction and may be easily and quickly assembled and put in place in operative relation to a valve stem.

Other objects and advantages will be brought out in the course of the following detailed description. 7

A preferred form of this invention is illustrated in the accompanying drawing wherein Figure 1 is a view showing a portion of an internal combustion engine in section and the improved valve spring device in place and shown in elevation.

Figure 2 is an enlarged fragmentary view showing the valve spring device in vertical section.

Figure 3 is a transverse sectional view taken along the line 3'3 of Figure 2.

This improved valve spring device is to be used in connection with an internal combustion engine A which is of a conventional construction and provided with the usual valves one of which is shown in Figure 1 and indicated by the character B. This valve. B is $3., OF FLUSHING, NEW YORK.

SPRING.

12, 1924. Serial Nb. 737,390.

provided with a depending stem B engaged v by the usual valve actuating plunger (J. In the usual construction a single spiral spring is placed about the valve stem and as previously explained this spring does not remain in the proper position about the valve stem and sometimes causes the valve to be improperly seated upon its valve seat and further the spring can not be adjusted for proper compression.

The valve spring device forming the subject matter of this invention is preferably of the specific construction shown in Figures 2 and 3 and is provided with a head ring 1 fitting about the valve stem and abutting against the engine casing. The opening 2 of this ring through which the valve stem extends is of such size that the stem can readily slide through this ring when the valve is in opera, tion. A lower abutment ring 3 is disposed beneath the ring 1 and provided with a plural ity of openings 4: slidably receiving the lower end portions of the guide rods 5 the upper ends of which are reduced to provide pires 6 extending through openings 7 in the ring 1 and having their upper ends formed into heads seated in enlarged upper end portions of the openings and having their upper surfaces fiush with the upper face of the head spaced relation to the head ring 1 and stationary upon the valve stem B and in order to do so there has been provided springs 10 and nuts 11 and 12. Thesesprings 10 are placed. upon the rods 5 before the disk 3 is put in place upon the lower end portions of the rods and the valve stem will then be passed downwardly through the openings 2 and 9 with its threaded lower end portion 13 extending below the disk 3. The nuts 11 and 12 are then screwed upon the valve stem, the nut 11 engaging the disk 3 and serving to move the disk upwardly and support it in the desired spaced relation to the ring 1 with the springs 10 compressed and held under the desired compression and the nut 12 being then tightened to engage the nut 11 and lock it upon the valve stem.

When this valve spring device is put in place it will be disposed about the valve stem to raise the disk 3 and compress the springs and then move the nut 12into locking engagement with the nut 11. The springs will therefore all be simultaneously adjusted and kept under the same compression.

\Vhen it is necessary to grind the valve and valve seat it is only necessary to remove the nuts from the valve stem and the valve stem can be drawn upwardly out of the spring device. After the grinding or other necessary repairs have been made the spring device can be easily and quickly put back in place and properly adjusted.

\Vhile the form specifically shown and described is the preferred form of this spring device it will be understood that other specitic constructions may be found practical and in some cases desirable and therefore the right is reserved .to make use of such modifications as come within the scope of the appended claim;

I claim:

In valve spring construction for internal combustion engines the combination withi a'n engine including a casing, a valve including a valve stem having a screw threaded end, means engageable with the screw threaded end for reciprocating the valve stem in the engine casing, an annular ring-shaped member slidable on the valve stem and having a central opening receiving the valve stem and being provided with opposed sets of transverse apertures at opposite sides of the valve stem .a nut adjustable on the screw threaded end, of the stem for limiting the movement of the ring-shaped member a second nut adjustable on the screw threaded end against the first mentioned nut to act as a lock nut, a-

second annular ring-shaped member having an opening t'herethrough larger than the opening of the first mentioned ring-shaped member and freely receiving therethrough the valve stem, said second member being adapted to abut directly against the engine casing without any portion of the engine casing obstructing the passageway thereof through which the valve stem freely extends,

a plurality of spaced rods supported by the second member and extending parallel to the valve stem and snugly slidable through the sets of openings in the first mentioned ringshaped member, and individual springs about said rods under compression between the first and second annular members.

ANDREW SEAMAN BARNEY, SR. 

